level circuit

In view of the problems existing in open loop system of CNC machine tools with stepper motor as driving motor, such as lower servo precision, without compensation for step-losing of stepper motor and so on, this paper presents a new technique called quasi-close loop control.

针对以步进电机作为驱动电机的数控机床开环系统存在的一些问题 ,诸如伺服精度低、失步误差不能补偿等 ,文章提出了一种新的控制技术———准闭环控制。